Once you've posted a photo using Instagram, the incredibly popular social photo network, you're kind of stuck with it in its tiny, locked down form. Instagram doesn't even let you save it easily ?*you need to screenshot it or resort to a third-part ripper if you want to preserve it locally after-the-fact. What Instagram does let you do, however, is set it to save a high resolution "2048x2048" version of the final, filtered photo to your camera roll. (I put that in quotes because it really seems to vary, sometimes a bit lower, sometimes higher.) All you have to do is enable it.
Full story from the iMore Blog...
Facebook
Twitter
Instagram